Hi, I have a problem with my laptop. It will not power up. On the odd occasion the power indicater light will be on. If that indicator light is on i try to start but that same indicator light starts to flash and a faint clicking sound comes from around the start up button. I have tryed taking the battery out, also tryed holding down the on button for 20 secs while the power supply and battery have been disconected and still nothing. Any sugestions?